Wood-carving machine



l. GLBRAITH.

WOOD CARVING MACHINE. APPLICATION FILED APR. 23, 1918.

15368,?12, Patented Feb; l5, 192i.

4 SHEETS-SHEET lf5 /9 7 /6 g 6 7 6 20 5 I /0 5 E E@ La@ oo 2 I ge' 25 35I I :l l 6/ -59 1. GALBRAITH WOOD CARVING MACHINE.

APPlICATION FILED APR. 23. i918.

Patented Feb. 15, 1921.

l. GALBRAITH. woon cAIIvIIIIG MACHINE. APPLICATION FILED APR.2s. Ism.

mma Feb. 15,1921.'

4 SHEETS-SHEET 3.

J. GALBHAH. WOOD CARVING MACHINE. APPUCATIONHLED APR. 2s. 191e.

Patented Feb. 15, .wf/Jl.

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WOOD-CABVING MACHINE.

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To all whom t may concern.'

Be it known that l, JOHN GALBRAITH, a citi-Zen of the United States,resident of Swatara, county of Ai'tkin, State of Minnesota, haveinvented certain new and useful improvements in `ld/vood-Caiwinglllachines, Vof which the following is a specification.

rlhe 'object of my invention is to provide a machine of suchconstruction that universal movement of the tool spindles will bepermitted and power transmitted to them with comparatively little lossand with a mimmum of belts.

A further object is to pro-vide a machine in which the parts are allnicelyl balanced, are capable of adjustment on the table for differentclasses ofwork and can be easily and quickly manipulated.

T he invention consists generally in various constructions andcombinations, all as hereinafter ydescribed and particularly pointed outin the claims. V

1n the `accompanying drawings forming part of this specification,

Figure 1 is a plan view of a wood carving invention,

Fig. 2 is a side elevation of the machine, a ortion of the frame beingbroken away,

' iig. 3 is a sectional view on the line 3-3 of Fig. 4 is a detail view,showing the mechanism through the operation of which universal movementof the tool carrying spindles is permitted,

Fig. is a detail view, showing the oscillating hanger through whichpower is transmitted to the spindles, Y

Fig. 6 is a detail view, showing an electric motor connected to the beltsheave for drivinor the spindles. V

n the drawing, 2 represents the frame of the machine. 3 is a tablehaving a series of slots 4 therein and -mounted on the top of the frameto form a bed for the work. This, table is of ordinary construction, but

l prefer to make it stationary on the frame instead of movable, as usualin machines of this type.

Y On each side of the machine frame I provide brackets 5 and rods 6arranged in parallel relation and secured in said brackets, and

above said rods and parallel therewith are screw shafts 7, also securedin said brackets. A carrier Shas anti-friction wheels 9 to rest and rollon the rod 6 and also has sleeves walls of the pipe Y on'the shaft 30and provided with counter- Y Specication of Letters Patent. PatentedEgt), 15, 1%21. Application filed April 23, 1918. Serial No. 230,210.

screw shaft 7 over the table.

Upon the carriage 8 l' provide brackets and 16 having bearings forupright shafts 17. The upper ends of these shafts have beveled gears 18meshing with pinions 19 on a cross shaft 20 and one end of said shaft 2Ohas an operating wheel 21 by means of which Ythe said upright shafts maybe revolved. The lower portion of these upright shafts have threadsformed' thereon and brackets 22 have arms 23 and 24 thereon, the formerbeing interiorly threaded to engage the threads of the shaft 17 whilethe latter slide freely on the upper portions of Said shafts. llVhen,therefore, the shafts 17 are revolved, the brackets 22 will be raisedorlowered, as desired.

At the inner ends of the brackets 22 I provide members 25, each in theform of a double T provided withl pairs of arms 26 and 27, the arms ofeach pair being in parallel relation and the arms 26 having pivot pins28 mounted therein between which the inner ends of the brackets 22 areinserted to form bearings for said pins.V rFhe arms 27 have similarpivot pins for blocks 28 which are inserted between them and-centrallj,7pivoted at 29 to the walls of a pipe 30, which extends transversely ofthe machine between the end rails of the carriage. This pipe may,therefore, oscillate longitudinally or transversely of the machine onthe vertical pivots 28 and also has a vertical movement on thehorizontal pivots 29. A shaft 30 is mounted in bearings on the carriagetransversely of the machine and has depending arms 31 pivotallyconnected by links .32 with the lower 3() and rods 33 are mountedbalance weights 34:. Brackets 35 have loop portions 36 to receive theends of the pipe 30 and bearings 37 are mounted on said pipe for pivotpins 38 carried by the loops -36 and' forming vertical pivots on whichthe said brackets may oscillate transversely of the machine.

At the forward ends V of the brackets 35 is a cross bar 39 in which aseries of tool-carrying spindles 40 are mounted, said bar 39 j eners 66are mounted n gaging the belts 49.

- tending its shaft 68 Vends forengagement of a tool or looseningpurposes. These.

are counter-balanced by means of weights. carried by the 41 mounted on frods 41 looped portion 36 of the brackets 35 on the lopposite side ofthe pivots from the tool spindles. Y

On the underside of the pipe 3U at each end thereof I provide sheaves 42having belt surfaces 48 and 44 separated by a rib 45 and also havingpreferably on the same hub a smaller belt surface 46. These sheaves aresecuredl to the underside of the pipe 30 by means of studs 47 havingthreaded ends to enter threaded sockets in pins 48 which are mounted inthe pipe 30 and have projecting therewith for tightening' sheaves 42turn freely on the studs 47 for the transmission of power to the toolspindles.

For driving the sheaves 42 I provide belts 49 for the pulleys 46extending tovsheaves 50 having running connections with the sheaves Vonthe surfaces 46 andv extending to pulleys 50 carried by rods 51 whichare pivoted at 52 in brackets 53. Pulleys 54 are supported by thebrackets 53 and have belts 56 connecting them with the pulleys50andbelts 57 connecting the pulleys 54 with a suitable source of motivepower. The lower ends of the rods 51 are provided with rods 58 pivotallysupported thereon and pivoted at 59 to pins 60 mounted in the walls .ofthe pipe 30. These pivotal connections allow the pipe to be voscillatedforl ward and backward or up and down to follow the different positionsofthe tool spindles.

Between the sheaves 42 and the pulleys on the tool spindles I providedriving belts 61, these belts having running connectionsA withthe'pulleys 42 on the surfaces 43 vand 44, so that a single belt carriedback and forth will operate two vspindles which are preferably arrangedas shown in the plan view, two at each end of the bar 39, with a masteror tracing' tool 62 in the center of the bar between them. 1

Suitable belt tightening devices 65,are provided for the-belts 6l andsimilar tighton the rods 58Vfor en- In Fig. 6 I have shown a modicationwhich consists in mounting an electric motor- 67 on the top of thepipeBO and eX- down through the pipe and mounting the pulley 42 on thelower end of this shaft and then belting direct from this pulley in themanner shown to the tool spindles. In this case there would, of course,bean electric motor at each end of the pipe'30. Y l The o-peration ofthe machine is as fol- .lngbearings in' of tool --carrying spindlessupported by said lows: The slotted table on which tliework 1s placedisstationarv. The carriage supis adjustedV porting the toolY spindlecarrier forward.k or backward over the table for the desired operatingposition and the carrier through the medium of its pivotal supports onthe carriage will be free to swing forwardY or backwardV andV laterallytov position the tools with respect to the work. The depending hangerthrough which power is transmitted will follow the carriage back andforth so that regardless of the position of the carriage over the table,the belts will transmit Apower to the tool carrying' spindles. Thecarriage isV counter-balanced so that it can be easilymovedback andforth or from side to side,.according tothe position or" the workon thetable.) Y

I claim as my invention:

1. lIhe combination, with a frame and a table mounted thereon, of lacarriagemounted for forward Vand backward .--mov'ement over said table,a carrier, upright shafts whereon said carrier is vertically adjustable,brackets having vertical pivots on said carrier, tool holders mounted insaid brackets and means for operating said tool holders.

2. A wood carving machine comprising a frame, astationary table mountedthereon, a carriage mounted for Vmovement back and forth over saidtable, a -transversemeinber mounted for horizontal oscillation and:vertical adjustment in said carriage, a tool carrier supported by saidmember and mounted for universal movement, and means for operating saidtool carrier. i i

3. A wood carving machine comprising a frame, a stationary table mountedtherein,

, a carriage mounted for movement forward and back over said table, atransverse membermounted for horizontal oscillation and verticaladjustment insaid carriage, a carrier mounted in said memberforuniversal movement over said table,A and having a plurality oftool-carrying spindlesLand an oscillatin'g hanger having pivotalconnections with said spindles.

ioo

4. The combination,with a frame, of a stationary table mountedtherein,aV carriage mounted formovement-forward and back over said table,brackets mountedinsaid carriage for horizontal oscillation and verticaladjustment, 'a transverse member havsaid brackets, la pluralitytransverse member, pulleys mounted on said member and driving beltsconnecting said pulleys with asource 'of-,motive power and with pulleyson said spindles.` A

5. The' combination, table mounted thereon,

ofa carriage mounted lfor forward and backwardv movement Vover saidtable, uprightl spindles journaled in said carriage and having threadedportions, vbrackets mounted forl oscillation on with a frame and laVAsaid upright spindles and engaging the threaded portions thereof forvertical' adjustment thereon, means for revolving said spindles, acarrier supported by. said bracket for universal movement and having aplurality of tool holders,'j andmeans for operating said tool holders.V- f i 6. The'combination," with a frame, of a table mounted therein, acarriage'mounted for lforward and .backwards lmovement over said table,brackets carried'by said carriage for vhorizontal oscillation, 'doubleVT-heads having vertical pivots on vsaid brackets, blocks havingvertical pivots on' said heads, a'floating cross member havinghorizontal pivots von said blocks, a vcounter-balancing means for saidfloating cross member, brackets having vertical pivdtson said floatingcross member and projecting forwardly over said table and having aplurality of tool holders, counter-balancing means for said tool holderbrackets, and means for driving said tool holders. Y Y

7. 'Ihe combinatiornwith a'frame, of'a table mounted thereon', vacarriage mounted for forward and backward movement over said table, aoating transverse member pivotally supported by said carriage, bracketshaving loop portions encircling said member and having vertical pivotsthereon, said brackets projecting forwardly over said table and providedwith a plurality of tool holders, a counter-balancing means for saidbrackets projecting rearwardly of said floating member, and means fordriving said tool holders.

8. In a wood carving machine, the combination, with a transversefloating mem-` ber having horizontal and Vvertical pivots and acounter-balancing means therefor, of brackets having vertical pivots onsaid floating member and projecting forwardly therefro-m and providedwith a plurality of tool spindles, a counter balancing means for saidbrackets, pulleysmounted on said floating member, an oscillating hangerand a driven pulley supported therein and having belt connections withthe pulleys of said floating member, and driving belts extending fromthe pulleys of said floating member to said tool spindles.

9. In a wood carving machine, the Ycombination, with a transverse memberhaving horizontal supporting pivots and counter balances for saidmember, brackets having vertical pivots on said member and projectingforwardly therefrom and provided with tool carrying spindles arranged inpairs, pulleys supported by said member and having double faces andsingle belts connecting the double faces of said belts with the pairsrespectively of said spindles, and means for driving said pulleys. y

l0. In a wood carving machine, the com- Y bination, with bracketsmounted to oscillate in a horizontal plane, double T-heads havingvertical pivots on said brackets, blocks having vertical pivots on lsaidT-heads, a transverselyV arranged floating member having horizontalpivots on said blocks, and counter-balances for said member, and acarriage having'tool spindles mounted therein and *providedv withlvertical pivots on said floating member, counter-balances for saidcarriage, and means for driving said spindles.

1l. rThe combination, witha frame, of a tableimounted thereon, acarriage mounted for forward 'and backward movement on said table, atransverse member having horizontal and vertical pivots on "saidcarriage for vertical and horizontal oscillation thereon, bracketshaving vertical pivots on said member and projecting over said table andprovided with tool holders, and counterbalancing `means for saidbrackets and means for driving said tool holders.

12. The combination, with a frame, of a table mounted thereon, acarriage mounted for forward and backward movement on said table, atransverse member having vertical and horizontal pivotal supports insaid carriage, brackets mounted for horizontal oscillation on saidmember and provided with tool holders, a counter-balancing means forsaid brackets on the opposite side of said member and means for drivingsaid tool holders.

13. The combination, with a frame, of a table mounted thereon, acarriage mounted for forward and backward vmovement on said table,brackets mounted in said carriage for horizontal oscillation, headshaving vertical pivots on said brackets, a pivoted crossmember supportedby said heads for vertical oscillation, a counter-balancing means forsaid member, a tool holder, brackets mounted for horizontal oscillationon said member and projecting forwardly over said table, and means fordriving said tool holders.

14. In a wood carving machine, the combination with a transverse memberhaving horizontal and vertical supporting pivots and counter-balancesfor said member, brackets pivoted on said member and provided with toolcarrying spindles, pulleys supported by said member, belts connectingsaid pulleys with said spindles respectively, an oscillating hanger, anda driven pulley mounted therein and having belt connections with thepulleys of said transverse member.

15. The combination, with a frame, of a table mounted therein` acarriage mounted for forward and backward movement on said table, amember transversely supported in said carriage and mounted to oscillatehorizontally and vertically therein, brackets mounted for oscillationwith said mem- Viso l said ,said tool holders.

. with tool holders,

ber and independently thereof and provided with tool holders, 'A andcounter-balancing means for said brackets, and means for driving saidtool holders. v

' 16. The combination, with aA frame, of a table mounted therein, acarriage mounted for forward and backward movement Von table, a membertransversely supported in said carriage and mounted to osci'llatehorizontally and vertically therein, brackets mounted for oscillationwith said member and independently thereof and provided andcounter-balancing means 'for said brackets, an oscillating hanger, adriven pulley mounted therein and driving connection between said pulleyand 17. The combination, in a wood carving machine with a transverselyarranged oating member mounted to oscillate horizonf tally andvertically and a counter-balancing means therefor, of brackets pivotallysup# ported on said member and provided with a plurality of tool holdersarranged in pairs, pulleys supported by said member and having doublefaces and belts connecting the hanger havingv double faces ofsaidpulleyswith the pairs respectively of said spindles`,;andv means fordrivinfrsaid pulleys. f y

' y 18..V wood carving Vmachine comprising a frame,a stationary tablemounted therein, Y,

a carriage mounted for movement; forward and back over saidjtable,1`amember mounted in said carriage for' universal 'rmovement over saidtable, a 'tool carriermounted for oscillation on said memberwandvhavinga 1 tool-carrying spindle, ing said spindle;

19. A wood 'carving'.machinejcomprising' a frame, a stationary tablemounted therein, a carriage mounted for and back over'said table,amember mounted in said carriage for universal` movement over said table,a tool carriermounted for oscillationron said member andhaving atool-carrying spindle,` and an oscillating spindle. l 'Y In witnesswhereof, Iihave hereunto'set my hand this 8th day ofApril, 1918.. v

JOHN GALBRAirm and means for drivmovement forward belt connections-withlsaid

